16180121815

Names of 16180121815

• Cardinal: 16180121815 can be written as Sixteen billion, one hundred eighty million, one hundred twenty-one thousand, eight hundred fifteen.

Scientific notation

• Scientific notation: 1.6180121815 × 10¹⁰

Factors of 16180121815

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 6507

Divisors of 16180121815

• Number of divisors d(n): 64
• Complete list of divisors:
  1 5 11 13 29 55 65 121 143 145 319 377 605 715 1331 1573 1595 1885 3509 4147 6449 6655 7865 17303 17545 20735 32245 38599 45617 70939 83837 86515 187021 192995 228085 354695 419185 501787 780329 922207 935105 2057231 2431273 2508935 3901645 4611035 8583619 10144277 10286155 12156365 22629541 26744003 42918095 50721385 111587047 113147705 133720015 248924951 294184033 557935235 1244624755 1470920165 3236024363 16180121815
• Sum of all divisors σ(n): 23795856000
• Sum of proper divisors (its aliquot sum) s(n): 7615734185
• 16180121815 is a deficient number, because the sum of its proper divisors (7615734185) is less than itself. Its deficiency is 8564387630

Bases of 16180121815

• Binary: 1111000100011010010001000011010111₂
• Hexadecimal: 0x3C46910D7
• Base-36: 7FL85W7

Squares and roots of 16180121815

• 16180121815 squared (16180121815²) is 261796341948238894225
• 16180121815 cubed (16180121815³) is 4235896703443899733281400018375
• The square root of 16180121815 is 127201.1077585411
• The cube root of 16180121815 is 2529.2626395617

Scales and comparisons

• 16,180,121,815 seconds is equal to 514 years, 24 weeks, 5 days, 22 hours, 16 minutes, 55 seconds.
• To count from 1 to 16,180,121,815 would take you about one thousand and twenty-eight years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 16180121815 cubic inches would be around 210.8 feet tall.

Recreational maths with 16180121815

• 16180121815 backwards is 51812108161
• The number of decimal digits it has is: 11
• The sum of 16180121815's digits is 34
• More coming soon!